Valerio Dorico (Brescia, XV century - Rome, late fifteenth century) was an Italian typographer.
Over the course of sixteen years (1539-1555) he printed numerous editions. He worked purely for the Roman Academy with his brother Luigi Dorico.Source: https://it.wikipedia.org/wiki/Valerio_Dorico, March 11, 2015

In 1543, Cristobál de Morales (Spanish-born composer) signed a contract with Valerio Dorico, a printer in Rome,
and two other publishers. Over the next year, he oversaw publication of the Missarum liber primus, which appeared on the market in 1544.
Source: https://johnjburnslibrary.wordpress.com...missarumliberprimus/

... The year 1544, the last full year he (Cristobál de Morales) spent in Rome, was one of singular importance for Morales. In that year he brought together and published a major retrospective collection of
no fewer than 16 Masses distributed over two books, to be printed in Rome by Valerio Dorico. Over 500 copies of each book were published, ensuring a wide dissemination for
the works.